import { createReadStream } from 'fs';

const readStream = createReadStream('./aaa.txt', {
    start: 8, // 从字节位置8开始读取
    end: 22, // 读取到字节位置22结束（包括22）
    highWaterMark: 3 // 每次读取3个字节
    });

    readStream.on('data', (data) => {
        console.log(data.toString());
        readStream.pause(); // 暂停读取
        setTimeout(() => {
        readStream.resume(); // 恢复读取
        },2000); // 暂停2秒后恢复读取
        });